Y= -0.25x + 4.7 Y=4.9x - 1.64
1 answer:
You might be interested in
Answer:
- C. 150√3
Step-by-step explanation:
Radius of the inscribed circle is the apothem of the hexagon.
Apothem (a) and half of the side (s) make a 30-60-90 right triangle.
<u>The ratio of the legs, as per property of 30-60-90 triangle:</u>
- s : a = 1 : √3 ⇒ s : 5√3 = 1 : √3 ⇒ s = 5
Half the side is s = 5 units, then side of the hexagon is 10 units.
<u>The area of the hexagon:</u>
- A = 1/2Pa, P- perimeter, a- apothem
- A = 1/2(6*10)*(5√3) = 150√3
Correct choice is C
Answer:
The proportion of former smokers with a university education is (A) 0.15
The proportion of men with a high school education that are current or former smokers is (B) 0.30
The degrees of freedom for the chi-square test for this two-way table are (B) 6
Step-by-step explanation:
The first thing to note is the two way table and ensure the proper arrangement of the figures in the table (Kindly find attached a picture of how the table should look)
Now, on to the first question on the former smokers with a university education = (43+28)/459 = 71/459 = 0.15 which is option A. [This is the total sum of former smokers with college and graduate school education].
The second question on the proportion of men with a high school education that are current or former smokers = (54+31+36)/459 = 0.285 = 0.30 (approximate value) which is option B.
The third question on the degrees of freedom for the chi-square test for this two-way table can be found with the formula DF = (r-1)(c-1) where,
DF = Degree of freedom ,
r = number of rows = 3
c = number of columns = 4 [<em>Kindly note that you have to exempt the row and columns with the totals</em>]
Therefore, DF = (3-1)(4-1) =2*3 = 6 which is option B.
